Polarized Ultrathin BN Induced Dynamic Electron Interactions for Enhancing Acidic Oxygen Evolution

Yixin Hao, Sung Fu Hung, Cheng Tian, Luqi Wang, Yi Yu Chen, Sheng Zhao, Kang Shun Peng, Chenchen Zhang, Ying Zhang, Chun Han Kuo, Han Yi Chen, Shengjie Peng*

*此作品的通信作者

研究成果: Article同行評審

35 引文 斯高帕斯(Scopus)

摘要

Developing ruthenium-based heterogeneous catalysts with an efficient and stable interface is essential for enhanced acidic oxygen evolution reaction (OER). Herein, we report a defect-rich ultrathin boron nitride nanosheet support with relatively independent electron donor and acceptor sites, which serves as an electron reservoir and receiving station for RuO2, realizing the rapid supply and reception of electrons. Through precisely controlling the reaction interface, a low OER overpotential of only 180 mV (at 10 mA cm−2) and long-term operational stability (350 h) are achieved, suggesting potential practical applications. In situ characterization and theoretical calculations have validated the existence of a localized electronic recycling between RuO2 and ultrathin BN nanosheets (BNNS). The electron-rich Ru sites accelerate the adsorption of water molecules and the dissociation of intermediates, while the interconnection between the O-terminal and B-terminal edge establishes electronic back-donation, effectively suppressing the over-oxidation of lattice oxygen. This study provides a new perspective for constructing a stable and highly active catalytic interface.

原文English
文章編號e202402018
期刊Angewandte Chemie - International Edition
63
發行號18
DOIs
出版狀態Published - 24 4月 2024

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